Supports Dual Channel DDR4Two 260Pin SODIMM sockets, support for DDR4 2133/2400/2666MHz (Real operation frequency depends on processor)Expandable up to 32GB, depends on 8GB/16GB SODIMM module (32 bit OS editions have a memory limitation of 2.8GB. Other hardware or application limitations may further prevent use of all installed memory. The 64bit edition of Windows Operating System is required for memory configurations of 4GB and above.)